Combined mixing and elevating device.



1.]. DROUGHTON.

COMBINED MIXING AND ELEVATING DEVICE.

APPLICATION FILED 11111.23. 1915.

1,1 98,530. Patented Sept. 19,1916.

2 SHEETS-SHEET 1.

l/VVEN TOR jw BY J. J. DROUGHTON.

COMBINED MIXING AND ELEVATING DEVICE.

APPLICATION FILED JAN-29,1915.

1,198,530. PatentedSept.19;1916.

2 SHEETS-SHEET 2.

IN VE IV TOR JOSEPH J. DROUGHTON, 0F NEWARK, NEW JERSEY.

COMBINED MIXING AND ELEVATING DEVICE.

Specification of Letters Patent. Patented Sept. 19, 1916.

Application filed January 29, 1915. Serial No. 5,003.

a citizen of the United States, and a resident of the city of Newark,county ofEssex, and State of New Jersey, have invented certain new anduseful Improvements in Combined Mixing and Elevatin Devices, of whichthe following is a speci cation.

This invention relates to improvements in combined mixing and elevatingdevices.

By the use of my invention I am enabled to produce a device which willnot only simultaneously mix and elevate concrete or like materialeffectively but will automatically dump its load at any desired floor ofa building, and furthermore will insure a dumping of the entire load ofmixed concrete or like material at the desired floor without the use ofspecially-rigged devices.

A feature of my invention is the provision in an elevator shaft of oneor more vertically disposed stationary toothed racks, an elevatingdevice adapted to be moved vertically in said shaft and having a mixingchamber adapted to contain a suitable charge of material to be mixed andmeans actuated by engagement with thesaid rack for agitating the chargein the mixing chamber during the movement of the elevating device in theshaft.

In the accompanyingdrawings in which similar reference charactersdesignate corresponding parts throughout the several views,

illustrated in said drawings, a suitable elevator shaft 1 is providedwith guide rails 22 preferably located, as shown, at opposite sides ofthe shaft and to one side of the transverse center thereof and twovertically disposed stationary toothed racks 33 located at the rear sideof the shaft and on opposite sides of the center of such rear side. Anelevator 4 is moved vertically within the shaft 1 by any suitable meanssuch as the rope 4. Said elevator has a suitable frame Work engaging theguide rails at opposite sides and is provided with a supporting platform5 preferably extending only a part of the distance transversely acrossthe shaft so that considerable shaft space 6 contiguous to the frontside of-said shaft 1 will be open and unobstructed by the said platform.

A mixing chamber 7, preferably comprising a bucket, is mounted upon saidplatform 5 and is preferably so pivotally mounted on a suitable shaft 8as to normally tilt toward the front of the said elevator shaft and hasan anti-friction bearing against a rail 9 on thefront side of the shaftto retain '-means,' preferably comprising paddles or agitating arms 14rotated by means of a suitable shaft 15 extending within and throughopposite sides of the bucket are provided for agitating and mixing thematerial within the bucket or mixing chamber. If desired, stuffing boxes15*15 for the shaft may be provided. The said mixing shaft 15 is driven"or actuated by the engagement or meshing, during the vertical movementof the elevating platform in the shaft, of suitable transmission deviceswith the racks 3-3, such transmission devices being preferably soarranged as to transmit rotation to said shaft and at the same timepermit its distance from the rack to be varied to enable. the bucket tobe dumped automatically. As illustrated, pinions 1616 fixed on a shaft17 mounted on the platform 5, mesh with the racks 3-3. Keyed to saidshaft 17 are sprockets 1818 which transmit rotary movement bysprocketchains 19-19 to sprockets 202O loose on the pivotal shaft.Sprockets 2121 also loose on said shaft but locked to and r0 tating withthe sprockets 20-20 in turn communicate rotary movement through chain 23to sprockets 22-22 on the mixingv shaft 15 and permit the bucket to bedumped as shown.

automatically and cause the mixing shaft to be revolved during thedumping opera tion to procure a cleaning out of the bucket.

If desired, the racks 33 may be suitably located to permit a start ofthe hoisting operation before the mixing begins and may be of a lengthsufiicient only to completely mix the concrete or other like substance,the hoist throughout the balance of the shaft being free of such mixingengagement. In the latter case, however, I preferably locate a shortrack-section contiguous .to the floor at which it is desired to dump inorder to cause an effective rotation of the agitating :arms or paddlesduring the automatic dump- ;operation. Y

Many modifications of my said invention will suggest themselves .tothose skilled in the art, as for example, the mixing chamber might be inthe form of a rotating barrel instead of the bucket with agitating armsduring the movement of the platform and adapted to permit a varying ofthe distance between said agitating means and rack to allow the mixingcompartment to be swung laterally on its pivot to dump.

2. The combination with .a suitable guidin-g structure, of a toothedrack suitably supported on said structure, a platform movable along saidstructure adjacent to said rack and means for moving said platform, abucket pivotally mounted on said platform, means for retaining saidbucket in a vertical position, a shaft extending within said bucket andhaving agitating arms, and power transmission means for said agitatingarms actuated by engagement with said rack during movement of theelevator and .ada 1 ed to permit a varying of the distance tween saidrack and mixing shaft to allow the bucket to dump.

:3. The combination with a suitable elevator shaft, of a stationaryve1tically-dis posed-toothed rack located within said shaft, an elevatorframe and means for guiding and moving the vertically within said shaft;a bucket pivotally mounted on said frame, means for causing said bucketto be normally retained in upright position and adapted upon withdrawalto permit dumping of said bucket, a shaft extending within said buckethaving agitating arms connected thereto and means on said frame meshingwith said stationary rack during movement of the elevator frame torotate said shaft.

4. The combination with a suitable elevator shaft, of a stationaryvertically-disposed toothed-rack located within said shaft, an elevatormovable within said shaft and having a platform extending from the reartoward the front of said elevator shaft less in area than said shaft toprovide an unobstructed shaft-space contiguous to the front of saidshaft, .a bucket .pivotally mounted upon .said platform and adapted todum.

toward the front side of said shaft, a sha t provided with agitatingarms extending within said bucket and means actuated by engagement withsaid stationary rack for rotating said shaft during the movement of theelevator within the elevator shaft.

5. The combination with a suitable ele vator shaft, .of a stationaryverticallydis- ,posed toothed-rack located Within said shaft, anelevator movable Within said elevator shaft, a bucket mounted :on saidelevator to tilt normally toward one side of the shaft and provided witha roller, a track having sections removably mounted at the side of thesaid elevator shaft toward which said bucket tilts and upon which saidroller may roll, a shaft provided with agitating arms extending withinthe bucket and power transmission means for said agitating arms actuatedby engagement with the said rack during vertical movement of theelevator and adapted to permit the distance between said rack and mixingshaft to vary to allow the bucket to dump automatically upon the removalof a track section.

'6. The combination with a suitable elevator shaft, of a stationaryverticallydisposed toothed-rack located within said shaft, an elevatormovable within said shaft and having a platform extending from the rearof the shaft toward the front side of the elevator shaft less in areathan said shaft to provide an unobstructed shaft space cantiguous to thefront of the elevator shaft, a shaft mounted on said platformincontiguity to said stationary rack, a pinion fixed on said shaftengaging said rack, .an-

posed toothed rack located within said elevator shaft, an elevatormovable within said elevator shaft and having a platform extending fromthe rear of the elevator shaft toward the front side thereof less inarea than said shaft to provide an unobstructed shaft space contiguousto the front of the elevator shaft, a shaft mounted on said platform incontiguity to said stationary rack, a pinion fixed on said shaftengaging said rack, another shaft mounted on said platform and disposedcentrally in said elevator shaft, a bucket pivotally mounted on saidlast mentioned shaft, an agitating shaft extending within said bucketand provided thence to the agitating shaft, whereby the distance betweenthe rack and agitating automatically dumped.

In witness whereof I- have signed my name to the foregoing specificationin the presence of two subscribing Witnesses.

JOSEPH J. DROUGHTON.

WVitnesses:

HELEN V. HOLMES, FREDERIC P. RANDOLPH.

shaft may be varied and the bucket may be

